Raileoad-chaib



UNITED STATES FATEN OFFICE.

W. M. C. CUSHMAN, OF ALBANY, NEV YORK.

RAILROAD-CHAIR.

Specification of Letters Patent No. 22,631, dated January 18, 1859.

To all whom it may concern:

Be it known that I, WILLIAM M. C. CUSH- MAN, of Albany, county of Albany, and State of New York, have invented a new and Improved Railroad-Chair; and I do hereby declare that the following is a full and exact description of the same, reference being had to the accompanying drawings and to letters of reference marked thereupon.

My invention consists in combining with an outside jaw, flange or rib of any rail road chair, a buttress at each end thereof, which jaw, flange or rib shall project upward even with the top of the track rail, or beyond the top for the purpose of receiving a part of the tread of the car wheels, and thereby relieve the joint of the rail where two rails meet. The said buttress-es are for the purpose of giving great strength and durability to the outside part of the chair, which I have hereinbefore denominated and described, a jaw, flange or rib, all of which mean nearly one and the same thing, and which I shall hereinafter call the outside part of any chair aforesaid. By the use of these buttresses hereinafter more fully described, a rail road chair may be made of much less quantity, and therefore less weight of material than in any other way ever before known where an outside part projects upward so as to take the tread of car wheels while passing over any road where such chairs are used, and a rail road chair so made is stronger than any other kind, will wear longer in consequence of allowing the aforesaid outside part of the chair to yield somewhat to the downward pressure of a passing` train of cars, the weight whereof shall in part be upon the top surface of the outside part aforesaid, and such chair can be made at much less expense than if made in any other way.

I construct my improved chair as shown at Figure 4, in which (A, A) are the ends .of two track rails meeting each other at or near the center of the aforesaid chair, (C) is the bearing surface of (D) the outside part of the chair, which extends upward in conformity to the shape of any rail until it is of sufficient height to receive a part of the tread of the wheels of a passing train of cars and in part support the weight thereof as hereinbefore described. (E, E,)

are the buttresses, and are placed one at each end of the said outside part. They are cast upon the bed plate (B) of the chair, which is that part on which rests one end of two rails and upon which is cast or otherwise fastened the aforesaid outside part (D). These buttresses extend upward as high as to the top of the said outside part (D), and are joined with it by the operation of casting, or otherwise, from the bottom to the top thereof, and they may be made of any required thickness or shape. The topmost part of each buttress unites with the top of the outside part and by so uniting aid in the formation of the bearing surface (C) of (D). Nhen so united they may be chilled at the same time of the chilling of the bearing surface (C). The outside part herein described is shown at (D) Fig. 3, together with one buttress (F) same ligure, is a rib cast upon the under side of the chair, and is for the purpose of giving strength and durability to'the bed of the chair. It is let into the cross-tie at right angles with the track rail.

Fig. l, shows an inside view of the track rail, and chair as well as the jaw or flange upon the outside thereof. Fig. 2, shows an inside view of the said chair without any track rail.

This chair may be spiked to the cross-tie by the common spike now in use, and will require only three to each chair, two being used upon the inside and only one being required outside of the rail. This kind of chair is not as liable to break as other chairs. It adds great strength to the rail joints, and

.keeps them in a firm and strong position.

The track is kept in a much better condition and at much less expense. This chair is very useful at curves in rail roads to prevent the lateral thrusts of the car wheels from displacing the ends of the said rails. By making these kind of chairs with buttresses as herein described, a cheap, strong, and durable chair is obtained.

Having thus described my invention I do not claim the outside part thereof, which extends upward even with the top of the track rail, or so as to receive a part of the tread of the car wheels of any train of cars passing over the joints thereof, and thereby support in part the weight of said passing train, and prevent an undue wear and fracture of the immediate ends of the said track rails, such outside part being the invention of Henry A. Landry for such purpose and as claimed by him in an interference deelated by the Commissioner of Patents between Henry A. Landry, William M. C. Cushman and others, reference being had to the report of the Examiner in Said ease of interference. But

What I claim and desire to secure by Letters Patent, is-

The buttress (E, E) at each end of the outside jaw, flange or rib (D) in combination With the same and united thereto and 10 with the top or bearing surface (C) as and for the purposes herein described and set forth.

WM. M. G. GUsHMAN.

Witnesses:

PAUL CUSHMAN, MARCUS P. NORTON. 

